FLIP-FLOP Tpye Soil Repellent and Release Finishing by th Oligomers Containing End-Capped Fluoroalkyls.

FLIP-FLOP 型防污和释放整理剂，由含有封端氟代烷基的低聚物制成。

• 批准号: 08680031
• 负责人: KAWASE Tokuzo
• 金额: $ 1.54万
• 依托单位: Osaka city University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08680031/
• 关键词: SR finishing; fluoroalkyls; polyoxyethylene acrylate; FLIP-FLOP; water and oil repellency; surface modification; ESCA surface analysis; ポリオキシエチレンオクリレートオリゴマー; ポリオキシエチレンアクリレートオリゴマー

The SR efficiency of perfluoroalkyl end-capped acrylate oligomers, which were synthesized from perfluoroalkanoyl peroxides and polyoxyethylene methacylates, was ezamined based on the modification of polyester surface.Under hydrophobic environment, polyester surfaces were modified to be oleophobic and their surface free energies were less than 25 mj/m^2, the dispersive and polar components of which were 16-18 and 2-6 mj/m^2, respectively. Based on the ESCA analysis, the fluoroalkyl groups are proved to be oriented to the air to provide an oil repellent surface.On the other hand, with the elapse of time, the contact angles of water on the modified surface decreased below that of unmodified one. It can be interpreted that under hydrophilic environmant polyoxyethylene groups swell out the surface and the surface is changed to be more hydrophilic the original one. This is Called FLIP-FLOP mechanism.Washing experiments using model oily soil haning various polarities also supported the FLIP-FLOP action of the acrylate oligomers.Moreover, a novel type oligomeric silane coupling agent having fluoroalkyls and morpholide group was synthesized similarly. Glass surface modified with those oligomeric silanes also showed the FLIP-FLOP action. Application to textiles are now under investigation.

以全氟烷酰过氧化物和聚甲基氧乙烯为原料合成的全氟烷基端盖丙烯酸酯低聚物，通过对聚酯表面的改性，对其SR效率进行了研究。在疏水环境下，对聚酯表面进行疏油改性，其表面自由能小于25 mj/m^2，其色散和极性组分分别为16-18和2-6 mj/m^2。基于ESCA分析，氟烷基被证明是面向空气的，以提供一个拒油表面。另一方面，随着时间的推移，改性表面上的水的接触角减小到低于未改性表面的接触角。这可以解释为在亲水环境下，聚氧乙烯基团膨胀出表面，使表面变得比原来的表面更亲水。这被称为FLIP-FLOP机制。用不同极性的油土模型进行洗涤实验也支持丙烯酸酯低聚物的FLIP-FLOP作用。并以类似方法合成了一种新型的含氟烷基和morpholide基团的低聚硅烷偶联剂。用这些低聚硅烷修饰的玻璃表面也表现出FLIP-FLOP作用。有关纺织品的申请现正接受调查。

项目成果

川瀬徳三: "両端にフルオロアルキル基を有する新規アクリレートオリゴマーによるポリエステルのSR加工" 油化学. 45. 259-265 (1996)

Tokuzo Kawase：“使用两端具有氟烷基的新型丙烯酸酯低聚物进行聚酯的 SR 加工”Yukagaku。 45. 259-265 (1996)

T.Kawase: "Fluoroalkylation of polyester by end-capped fluoroalky-functional silanes" J.Adhesion Sci.& Technol.11. 1381-1397 (1997)

T.Kawase：“通过封端氟烷基官能硅烷对聚酯进行氟烷基化”J.Adhesion Sci。

T. Kawase: "Surface Modification of Glass by End-Capped Fluoroalkyl-functional Silanes" J. Adhesion Sci. Technol. 10. 1031-1046 (1996)

T. Kawase：“通过封端氟烷基官能硅烷对玻璃进行表面改性”J. Adhesion Sci。

川瀬 徳三: "両端にフルオロアルキル基を有する新規アクリレートオリゴマーによるポリエステルのSR加工" 油化学. 45. 259-265 (1996)

Tokuzo Kawase：“使用两端具有氟烷基的新型丙烯酸酯低聚物进行聚酯的 SR 加工”Yukagaku。 45. 259-265 (1996)

H. Sawada: "Synthesis and Surface Properties of Novel Fluororalkylated Flip-Flop-Type Silane COupling Agents" Langmuir. 12. 3529-3530 (1996)

H. Sawada：“新型氟烷基化触发器型硅烷偶联剂的合成和表面性质”Langmuir。